#283859

Color #283859

A muted dark blue.

Closest named color Charcoal #36454f · ΔE 16.47 Nearest Tailwind class slate-700 #314158 · ΔE 4.9

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Conversions

HEX

#283859

RGB

rgb(40, 56, 89)

HSL

hsl(220.4, 38%, 25.3%)

HSV / HSB

hsv(220.4, 55.1%, 34.9%)

CMYK

cmyk(55.1%, 37.1%, 0%, 65.1%)

LAB

lab(23.67, 4.23, -21.85)

LCH

lch(23.67, 22.26, 280.96)

OKLCH

oklch(34.3%, 0.062, 263.79)

HWB

hwb(220.4, 15.7%, 65.1%)

Harmony colors

Complementary

#594928

Analogous

#285159

#283859

#302859

Triadic

#283859

#592838

#385928

Split-complementary

#283859

#593028

#515928

Tetradic

#283859

#492859

#594928

#385928

Square

#283859

#592851

#594928

#285930

Shades

Color #283859 mixed toward black.

#212f4a

#1b253b

#141c2d

#0d131e

#07090f

Tints

Color #283859 mixed toward white.

#3c5485

#506fb0

#7c93c4

#a7b7d8

#d3dbeb

Tones

Color #283859 mixed toward gray.

#2c3955

#303b51

#343c4d

#383e49

#3c3f45

Accessibility

Aa White text on this color

11.67:1

Aa Black text on this color

1.8:1

White text reads better on this background (11.67:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#303052 · ΔE 5.9

Deuteranopia

#2f2d51 · ΔE 6.8

Tritanopia

#294d4b · ΔE 21

Achromatopsia

#383838 · ΔE 15

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #283859;

Tailwind (arbitrary value)

bg-[#283859]

Related colors

Cornflower Blue #6495ed

Royal Blue #4169e1

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#283859 (#283859) is rgb(40, 56, 89) in RGB.

No, #283859 is not one of the 216 web-safe colors — for that, every RGB channel would have to be a multiple of 51.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

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Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

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Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

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Build something with this color

Generate a full palette from #283859, or check how it holds up for accessibility.

Generate a palette → Check contrast